Make Emacs find all info files in `package-user-dir' on Gentoo Linux

README.org

@@ -740,6 +740,7 @@ the help facilities of Emacs.
 | info                         | help-map | {{{kbd(C-h i)}}} |
 |------------------------------+----------+------------------|
 
+
 ** [[info:emacs#Name Help][Shortdoc-display-group (info)]]
 :PROPERTIES:
 :CUSTOM_ID: sec:shortdoc-display-group
@@ -799,15 +800,24 @@ defined in this Org file.
 :CUSTOM_ID: sec:info
 :END:
 
-Listing [[lst:configure-info]] adds a path in my home directory to the places where
-=info= looks for files.
+Listing [[lst:configure-info]] adds the required paths to the places where =info=
+looks for files.
 
 #+caption[Configure =info=]:
 #+caption: Configure =info=.
 #+name: lst:configure-info
 #+begin_src emacs-lisp
   (with-eval-after-load 'info
-    ;; Emacs should find my "python.info" file.
+    ;; Make Emacs find the "*.info" files in `package-user-dir' on Gentoo Linux.
+    (when (eq system-type 'gnu/linux)
+      (dolist (path
+               (nreverse
+                (mapcar
+                 (lambda (name)
+                   (expand-file-name (file-name-directory name)))
+                 (directory-files-recursively package-user-dir "\\.info\\'"))))
+        (add-to-list 'Info-directory-list path nil #'file-equal-p)))
+    ;; Make Emacs find my "python.info" file.
     (add-to-list 'Info-directory-list
                  (expand-file-name "~/.local/share/info")))
 #+end_src